Physical and chemical properties of water Flashcards
1
Q
Why must the gill be efficient?
A
- water vs air as respiratory medium is very different
2
Q
Breakdown the following equation:
[O2] = a*Po2
A
- [O2] = O2 conc
- a = solubility
- Po2 = partial pressure of O2
3
Q
What is O2 solubility in water compared to air? What does this mean?
A
- 1/30
- much less ([O2] low)
4
Q
What is CO2 solubility in water compared to air? What does this mean?
A
- 1 (the same = not a problem)
5
Q
What is O2 diffusion Coefficient in water compared to air? What does this mean?
A
- 1/10 000
- very slow (long time to diffuse)
6
Q
What is the unit of measurement for solubility?
A
- ml/L H2O
7
Q
What is the unit of measurement for diffusion coefficient?
A
- cm^2/sec
8
Q
What is the density of water compared to air?
A
800
9
Q
What is the viscosity of water compared to air?
A
50
10
Q
What does the density and viscosity difference of air and water impact?
A
- breathing/ventilation
- cost is higher
11
Q
What is the heat conductivity of water compared to air?
A
25
12
Q
What is the heat capacity of water compared to air?
A
3 000
13
Q
What effect do heat conductivity and capacity of water have on fish?
A
- impact temp regulation
